FoodNavigator.com | High sugar consumption directly linked to heart failure, data suggests FoodNavigator.com The research suggests that glucose 6-phosphate (G6P) - a breakdown product of glucose - causes direct stress to the heart by altering muscle proteins and pump functioning that can lead to heart failure. Writing in the Journal of the American Heart ... Too much sugar is a highway to heart failure: Study Sugar stresses the heart, may contribute to heart failure: study Too Much Sugar Increases Heart Failure Risk |